It's not surprising, but it is disturbing. Because this result holds independent of the content being communicated. A good presentation doesn't just affect your

It's not surprising, but it is disturbing. Because this result holds independent of the content being communicated. A good presentation doesn't just affect your evaluation of opinions, ethical arguments, or he-said-she-said judgements. It affects your evaluation of proofs, engineering decisions, and concrete physical evidence. Decisions that are formal enough, in the mathematical sense of the word, that we should be relegating them to computers if at all possible. That's disturbing.